J.N. Sharma & Kehar Singh. (2009). Partial differential equations for engineers and scientists (2.). Narosa.
Chicago-стиль цитированияJ.N. Sharma and Kehar Singh. Partial Differential Equations for Engineers and Scientists. 2. New Delhi: Narosa, 2009.
MLA-цитированиеJ.N. Sharma and Kehar Singh. Partial Differential Equations for Engineers and Scientists. 2. Narosa, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.